Method of disc alignment using printed alignment marks
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United States of America Patent
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Jul 29, 2014
Grant Date -
Jun 2, 2011
app pub date -
Dec 2, 2009
filing date -
Dec 2, 2009
priority date (Note) -
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Abstract
Processes include aligning a disc with a template at a location so that the pattern from the template is transferred to the disc in a relative orientation. The relative orientation provides that when the disc with the transferred pattern is finally assembled into a hard disc drive, an inner diameter of the spindle hole of the disc may be abutted against an outer diameter of the disc drive spindle, and the data-containing patterns on the discs will be aligned concentrically with a center of the disc drive spindle. While the data-containing patterns are aligned concentrically with the disc drive spindle, the substrate itself is allowed to be non-concentric. Still other aspects include a disc having eccentric formations including PIM and one or more of bit patterns and servo information formed on a disc surface, the eccentricity of the formations is determined based on an expected difference between the radius of the spindle hole of the disc and the radius of the spindle on which the disc will be placed during assembly, with the PIM used to determine the angular alignment of the disc with the spindle.
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- 15 United States
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Patent Owner(s)
- SEAGATE TECHNOLOGY LLC
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gauzner, Gennady | San Jose, US | 32 | 356 |
Hwu, Justin Jia-Jen | Fremont, US | 14 | 34 |
Kuo, David S | Palo Alto, US | 99 | 357 |
Lee, Kim Yang | Fremont, US | 54 | 480 |
Wang, Li-Ping | Fremont, US | 47 | 229 |
Yu, Zhaoning | Mountain View, US | 35 | 732 |
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